This question goes out to those that have converted Royals into Bluesmobiles, how did you wire the front marker lights and turn signals? Is there a harness that plugs into the existing Royal wiring or are we cutting and splicing?
You will likely end up needing to make your own sub harnesses. My car was a non royal car but I ended up using a royal wiring harness, so I had to build new harness. I didn't go into it to much on my build thread but here is where I did it. bluesmobiles.proboards.com/post/14980/thread
A little time spent with the 76 and 74 wiring diagram and I was able to figure it out. Its basically 3 wires.